Process for sulphurizing organic compounds



. I s/iterated li e-h ligzilv we Brewing.

To e22 wiimre, concern; Be it lmowu that ii, Fisherman W'ILLIAM Arman a subject of the King oi Great which the following is e, specificution.

Britain, residing in Mmchester, in the county of Lancaster end Kingdom of England, have invented certain new and Improved Processes for Sulphurisiug Urgunic Compounds, oi

This invention relates to an improved process for sulphurlzing organic compounds especially for producing 'dyestufis. it is usuul to perform such reaction in presence liutyl alcohol is particularly suitable since ii} is more inert than certain other solvents hitherto proposed, i. c. it is less susceptible to destruction by polys ulphides it is miscible with water within limits and it easily separable from water. The reac lion occurs more readily with a liquid of lllgilGI. bo ling point than with a liquid of:

lower boilingpoint.

It is possible to use a Wet paste of raw material since the butyl alcohol can be added friii r v troso phenol. l

thereto and the wotercan he readily separated. allows an organic solvent to be used without making it necessary to dry and grind t he paste;

E'axample.

- A mixture containing 100 kilos of the indophnenol mudeffrom. carbazol and p-ni- 200 kilos ofuormal but-yl alcohol, QOillrilos of sodium sulphide and 150 lilloeof powdered sulphur, is heated "-slowly tolOll C. and then under reflux-for 50 hrs. After dilution with water and removing: the butyl alcohol by distillation, the dyestuil is separated by filtration in the usual rnanuen it dyes cotton a blue shade from hydrosulphlte vat and the dyeing are,

to washing, light, and to chlorine. Pyridine can also be used alone or pro-i"; uhly in. admixture with butyl alcohol.

The process is applicable tolthe menu fracture usher dyes made by fusion of the looiling i ing reagen This'is a great advantage because it heating. of

rescues sonsuersrunrzmo onomxo communes.

Application nee January 22, 1923. semi so. mecca;

organic substances with polysul hides. The invention includes the dyestufis so manufactured.

When applied to organic substances other than indo-phenols, the raw materials employedare those which are sulphurizalole at temperatures near the boiling point of normal butyl alcohol namely 118.8" (I.

I declare that what i claim is2- L The process of treating organic materials sulphurizable at a temperature about the boiling point of normal butyl alcohol which consists in heating the material with a sul'puhrizing reagent in presence of an inert solvent having a boiling point not far removed from the boiling point of normal'butyl alcohol;

2. The pr cess of treating organic materials sulphurizable at a temperature about point of normal butyl alcohol which consists in heating; the material with a polysulphide in presence-of normal hutyl alcohol. i

3. The process of treating organic materiels sulphurizable at a temperature about which consists in adding'butylalcohol to a wet paste of the organic material and thenheating the mixture with a sulphuric- 4. The process of sulphurizing indophenols which consists. in heating the indophenol witha polysulphide and butyl alcohoh I 5. The process of sulphurizing indophenols which consists in mixing a wet paste of the indophenol with butyl alcohol and apolysulphide and heating the mixture.

6. Vat dyestuffs prepared by prolonged indophenols with a polysul-' phide and butyl alcohol. v

7 A process of treating organic materials sulphurizable at a temperature about the boiling point of normal hutyl alcohol which consists in heating the material with a sulphurizing agent in presence of butyl alcohol. L:

8. Dyestuffs prepared by heating organic materials vsulphurizable at a temperature about the boiling point of normal butyl alcohol with a sulphurizing' agent in pres ence of normal butyl alcohol,

In witness whereof, I have hereunto signed c my name this 18th day of J'euuury ices.

Arum

Eil-

the boiling" point-of normal hutyl alcohol 

